I understand that your Officejet Pro 8620 e-All-In-One Printer is giving errors regarding a memory device. I can help you with that.
To start, make sure the printer is plugged directly into a wall outlet and not a surge protector. Once done, remove all cords from the back of the printer. Next, while the printer is powered on, remove the power cable from the back of the printer for one minute.
If the error message returns, the printer needs to be replaced. You can contact HP Support by clicking on this link and filling out the form at the bottom to discuss options based on your warranty.
Please let me know if this resolves your issue. If it does, please click on Accept Solution. If you appreciate my help, please click on the thumbs up icon. Both icons are below this post.
~DocCottle I work on behalf of HP
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